[MacPorts] #69662: port diagnose checks for Homebrew in /usr/local but not /opt/homebrew

[MacPorts]

#69662: port diagnose checks for Homebrew in /usr/local but not /opt/homebrew
------------------------+--------------------
 Reporter:  ryandesign  |      Owner:  (none)
     Type:  defect      |     Status:  new
 Priority:  Normal      |  Milestone:
Component:  base        |    Version:  2.9.2
 Keywords:              |       Port:
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 `port diagnose` checks for Homebrew in /usr/local (where it is located on
 x86_64 machines) but not /opt/homebrew (where it is located on arm64
 machines).

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Ticket URL: <https://trac.macports.org/ticket/69662>
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